EP 0707250 A4 19960108 - FAILURE DETECTION APPARATUS AND METHOD
Title (en)
FAILURE DETECTION APPARATUS AND METHOD
Title (de)
VERFAHREN UND GERÄT ZUR FEHLERERKENNUNG
Title (fr)
DISPOSITIF ET PROCEDE DE DETECTION DE DEFAILLANCE
Publication
Application
Priority
- JP 9301173 W 19930823
- JP 22411892 A 19920824
- JP 27571592 A 19921014
Abstract (en)
[origin: EP0707250A1] In a controlled apparatus including at leat one detector and at least one actuator, when an actuator not operating normally is detected, detectors which may be in trouble are inspected through a failure detecting means of a controller. This controller includes input signal storing means for storing the state of an input signal from the detector, auxiliary input signal storing means for storing the state of an input signal given from auxiliary signal generation means, logical operation means for generating an output signal to be applied to the abnormal actuator in accordance with a predetermined logic, and output signal storing means for storing the state of the output signal generated by the logical operation means. An identification code of an abnormal output signal corresponding to the actuator not operating normally is designated. The input signal which generates the abnormal output signal is designated, and affects the logical operation of the logical operation means, is extracted. When the extracted input signal is the one stored in the input signal storing means, the identification code of this input signal is stored in the storing device. <IMAGE>
IPC 1-7
IPC 8 full level
G05B 19/05 (2006.01)
CPC (source: EP US)
G05B 19/058 (2013.01 - EP US); G05B 2219/1181 (2013.01 - EP US)
Citation (search report)
- [A] EP 0292914 A1 19881130 - OMRON TATEISI ELECTRONICS CO [JP]
- [A] EP 0164421 A1 19851218 - FANUC LTD [JP]
- [A] SIKORA D S ET AL: "EMERGENCY SHUTDOWN SYSTEM", BICYCLING SCIENCE, SAN DIEGO, SEPT. 11 - 13, 1989, no. CONF. 36, 11 September 1989 (1989-09-11), WHITT F R;WILSON D G, pages 23 - 27, XP000077773
- See references of WO 9404969A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0707250 A1 19960417; EP 0707250 A4 19960108; US 5742624 A 19980421; WO 9404969 A1 19940303
DOCDB simple family (application)
EP 94908113 A 19930823; JP 9301173 W 19930823; US 38784695 A 19950223